XML 28 R16.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Other Financial Information | 6 Months Ended
--- | ---
Jun. 30, 2016
Other Financial Information [Abstract] |
Other Financial Information | Other Financial Information OTHER OPERATING REVENUES – Other operating revenues in the Consolidated Statements of Income include the following items:
| Three Months Ended June 30, |  | Six Months Ended June 30,
(Thousands of dollars) | 2016 |  | 2015 |  | 2016 |  | 2015
Renewable Identification Numbers (RINs) sales | $ | 43,868 |  |  | $ | 36,248 |  |  | $ | 82,643 |  |  | $ | 73,847 |
Other | 702 |  |  | 664 |  |  | 2,168 |  |  | 1,613 |
Other operating revenues | $ | 44,570 |  |  | $ | 36,912 |  |  | $ | 84,811 |  |  | $ | 75,460 |
CASH FLOW DISCLOSURES — Cash income taxes paid (collected), net of refunds, were $15,064,000 and $59,098,000 for the six month periods ended June 30, 2016 and 2015, respectively. Interest paid was $18,140,000 and $15,869,000 for the six month periods ended June 30, 2016 and 2015, respectively.
| Six Months Ended June 30,
(Thousands of dollars) | 2016 |  | 2015
Accounts receivable | $ | (11,921 | ) |  | $ | (32,463 | )
Inventories | 3,412 |  |  | (36,386 | )
Prepaid expenses and other current assets | 23,978 |  |  | (11,859 | )
Accounts payable and accrued liabilities | 17,955 |  |  | 67,207 |
Income taxes payable | 24,003 |  |  | (20,046 | )
Current deferred income tax liabilities | — |  |  | 8,637 |
Net decrease (increase) in noncash operating working capital | $ | 57,427 |  |  | $ | (24,910 | )

X
- Definition Other Financial Information [Abstract] + References No definition available. + Details
Name: | musa_OtherFinancialInformationAbstract
Namespace Prefix: | musa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosures of supplemental information, including descriptions and amounts, related to the balance sheet, income statement, and/or cash flow statement. + References No definition available. + Details
Name: | us-gaap_AdditionalFinancialInformationDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration